2007 Population Estimates

To determine population estimates, biologists conduct the Waterfowl Breeding Ground Population and Habitat Survey, the largest and most comprehensive survey of its kind in the world. The survey samples 1.3 million square miles across the north-central United States, south-central and northern Canada, and Alaska. The survey estimates the number of ducks in the continent's most important nesting grounds.

The 2007 population estimates for common duck species were either above the 2006 estimates, or were similar or unchanged. Mallard, Blue-winged Teal, American Wigeon, Gadwall, and Northern Shoveler populations were above 2006 estimates.

Northern Pintail, Green-winged Teal, Scaup, Redhead and Canvasback populations were similar or unchanged.

Total Breeding Duck Population Estimates

Total Breeding Duck Population Estimates

In the Waterfowl Breeding Population and Habitat Survey traditional survey area (strata 1-18, 20-50,and 75-77), the total duck population estimate was 41.2 million birds in 2007. This was 14% greater than the 2006 estimate of 36.2 million birds and 24% above the 1955-2006 long-term average.